#include<stdio.h>
#include<stdlib.h>
int main()
{
  printf("MYVAL:%s\n",getenv("MYVAL"));
  //extern char** environ;
  //for(int i=0;environ[i];i++)
  //{
  //  printf("[%d]:%s\n",i,environ[i]);
  //}

  return 0;
}
